Gas-furnace.



G. H. MINIER & T. LOWE,

GAS FURNACE.

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GAS FURNACE.

APPLICATION FILED AUGnAzv, 1910.

Patented July 16, 1912.

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G. H. MINIER & T. LOWE.

GAS FURNAGB.

APPLICATION FILED AUG. 27, 1910.

1,032,695. i Patented July 16, 1912.

3 SHEETS-SHEET 3.

. `FICE.

GEORGE H. MINIER AND THADDEUS LOWE, F SOUTH PASADENA., CALIFORNIA.

Losetas.

Specication of Letters Patent.

Patented July 16, 1912.

Application led August 27, 1910. Serial No. 579,331.

To all 'whom 'it may concern:

Be it known that we, GEORGE H. MINIER and THADDnUs LOWE, citizens of the United i States, residing at South Pasadena, in the tion may be utilized to radiate heat.

Referring to the accompanying drawings :-Figure 1 is a front view in elevation and vertical transverse section of the furnace. Fig. 2 is a front View of the furnace constructed in accordance with this invention. Fig. 3 is a side view in elevation and transverse vertical section on the line g/-y of Fig. 2. Fig. 4 is a rear View of the furnace with the casing broken away. Fig. 5 is a plan view of the bottom of the furnace in cross section showing the burners.

The furnace constructed in accordance with this invention consists of three main partS-theire box, the drum or radiator, and the Vjacket or casing. `The iire box 1 consistsfof a rectangular sheet iron box having secured to its under side an asbestos plate 2 to prevent the radiation of heat into the floor-or foundation upon which the furnace rests, and which supports the furnace in elevated position so as to permit the air to enter and ascend the air spaces surrounding the drum. The fire box 1 is formed with an opening, the top of which opens into a drum 3 whic consists of a rectangular sheet iron boxhaving its sides and rear wall extending to thef.1 bottom of the fire box and secured thereto,- as shown by ythe rear wall 3 in Fig. 3. The front wall 11 of the drum terminates at its lower end at the top of the re box, where it is connected with a transverse strip 5,' `the rear edge of which is packed tight-with a strip of asbestos 5', and the front edge of which is secured to a transverse front plate 6 forming the front of the fire ,box and terminating at a short distance above the bottom of the fire box so as to form an opening 7 for the passage of air to the fire box and up through the drum.

rl"he fire box is braced by means of diagonal braces 6. Surrounding the drum and the re box is a rectangular casing 8 of sheet metal which is spaced from the drum so as to form vertical air spaces on. each side thereof, saidV casing extending a little distance above the top of the drum so as to form air spaces atl the top of the drum and casing. The casing 8 is suitably supported, as, for example, by means of angle irons 9 connecting the casing with the drum. The top of the casing 8 is provided with vertical openings 10 for the escape of warm air from the casing into the room to be heated.

Suitable burners are provided which are located in the fire box and, as here shown, preferably consist of pipes 11 extending lengthwise of the fire box and secured at their rear end to the wall of the fire box and at their front end to the depending plate 6, said pipes being provided with sets of holes 12 for the escape of gas, which is controlled by needle valves and air mixers. The front ends of the pipes 11vare provided with pipe extensions 13 which connect with depending branch pipes 14 connected with a main gas supply pipe 15 leading to a supply tank. The needle valves and air mixers of the burner pipes 11 are controlled by suitable handles 16 at the ends of the branch pipes 13 and the main gas supply pipe 15 is provided with a controlling valve 17. The fire box is also provided with a lighter burner which consistsrof a curved perforated pipe 18 with elongated arms 18 and connected by a coupling 182 to a branch pipe 183 with a valve 19 for controlling the needle valves in the burner 18. When the burner pipes 11 are lighted by the lighting burner 18, the lighting burner is turned-out and the burner pipes 11 supply the heat to the furnace. The burner pipes 11 are so placed and the apertures are so located that the liiames of the burning gas do not come directly in contact with the sides of the fire box and in this way the life of the iron in the fire box is prolonged. Gases, smoke, fumes, steam, and other products of combustion pass up through the fire box into the radiator or drum where their up ward progress is arrested by baffle plates located in said drum.

The casing 8 is preferably constructed of galvanized iron and has a lining 2O of bright tin situated about three-fourths of an inch from the casing and forming a narrow chamber 20 just inside the casing which is open at the top and bott-om and through which a current of air is at all times passing, which current of air prevents the radiation of heat from the casing. This current of air is admit-ted through an ope11- ing Q1 in the front wall of the casing just above the front plate 6 of the fire box..v said air also passing through an opening 22 in the bottom of the lining 20 into the air space located between the. lining 20 and t-he walls of the drum 3. The lining` 2O is supported by means of brackets 23 between the lining Q0 and the Walls of the drum 3. The battle plates 24 consist of plates formed of sheet metal and parallel with each other and spaced one above another and secured at their edges by means of brackets Q5 to opposite sides of the drum'3. These battle plates 2l are so mounted on the brackets 25 as to leave a space between the. edges of the batlie plates 24 and the sides of the drum 3. The baiile plates are so located in respect to the sides of the drum 3 as to leave narrow spaces between each edge of the baffle plates and the sides of the drum, as shown in Fig. 3, such spaces being about three-fourths of an inch wide. Through these spaces pass the products of combustion which ascend between the baille plates where their progress is arrested. The products of combustion continue to 'ascend to the space above the second or upper baffle plate 2J: and are arrested by the baille plate 26 which eX- tends across the drum on opposite sides thereof and is mounted on one edge at the top of sheet. metal support 27 secured at its lower end to the rear wall 3 of the drum. The opposite edge of the bafile plate 26 terminates/at a short distance from the front wall 4 of the drum, thus permit-ting the products of combustion to pass to the space above the baille plate 26 between the latter and the top of the drum 3. The products of combustion pass through this passage way to the rear and into the' descending passage way 28 formed by the vertical plateY of sheet metal 27 and the rear wall 3 of the drum and down to the bottom of said passage way and out through two passage ways 29 connecting the rear wall 3 of the drum with a vertical passage way 30 communicating at its upper end with a horizontal passage way 3Q through which the products of combustion escape after they have passed up through the verticalpassage way 30.

The location of the baille plates'is such that the products of combustion are at all times forced to the out-er port-ion of the radiator or drum whence the heat is radiated into the air in the space surrounding the drum. The passage way 30 through which the products of combustion ascend also causes the heat to be radiated to the outer portion of the drum losing still more of its heat into the surrounding air. Still more of the heat ofthe products of combustion passes into the air space surrounding the drum. All the joints and seams are double and are packed with asbestos so constructed that in no possible way can anyvv of the gas, or fumes of the products of combustion escape from the drum into the surrounding air space or into the room it is desired to heat. The air in the spaces surrounding the drum is thus heated by the radiation from the drum and is confined by the casing and having no other` way to escape passes through the passages l0 in the top of the casing to the room to be heated.

Having described our invention,

claim A furnace comprising a easing, a fire boX within said casing and spaced from the walls thereof. a battle plate in said fire box extending from a point adjacent the top of said fire box and forming therewith a shallow descending passageway 28 extending across one side of said fire box, a vertical passageway30,a discharge pipe 32 communieating therewith and a pair of pipes 29 providing communication between the lower end of said shallow passageway 28 and said vertical passageway 30.

In testimony whereof we hereunto aflix our signatures in presence of two witnesses.

GEORGE H. MINIER. THADDEUs Lown.

Vitnesses:

E. E. WAsI-IBURN, B. V. GARWooD. 

